How do leeks survive the winter?

Leek alias Fengben, grass stalactite, Qiyang grass, lazybones, etc., its leaves, scape and flowers are eaten as vegetables; seeds can be used as medicine, in traditional Chinese medicine, some people call leek "intestinal lavage grass". So how do leeks survive the winter?

First, how to spend the winter with leek

After the last crop of leek is harvested before winter, bury the root of the leek with an appropriate amount of soil, and then cover the soil with some straw or cow dung, which has a good heat preservation effect. The leek will sprout again next spring.

Second, how to plant leek

1. Temperature

Leek likes cold and cool, cold-resistant and heat-resistant. The optimum temperature for seed germination is above 12 ℃, the growth temperature is 15 ℃ to 25 ℃, and the underground part can bear lower temperature.

two。 Light

Leek needs medium light intensity and strong negative tolerance. But the light is too weak, the accumulation of photosynthate is less, the tiller is small and weak, the yield is low, it is easy to senescence prematurely; the light is too strong, the temperature is too high, the fiber is too much, the quality is poor.

3. Moisture content

The suitable air relative humidity of leek is 60-70%, and the soil moisture is 80-90% of the maximum field capacity.

4. Soil nutrition

Leek has strong adaptability to soil texture, and the suitable pH is 5.56.5. It needs a large amount of fertilizer and has strong fertilizer tolerance.

Third, the efficacy and function of leek.

1. Leek contains a large number of volatile essential oils and sulfides, these substances can soothe the liver and regulate qi, enhance digestive function, increase appetite, warm stomach and spleen.

two。 Leek contains a lot of dietary fiber, which can promote gastrointestinal peristalsis, protect intestinal mucosa and soften feces.

3. Leek contains allicin, which can dissipate blood stasis and activate blood circulation and guide qi stagnation, which is suitable for injury, nausea, enteritis, hematemesis, chest pain and so on.

Leek is rich in protein, fat, carbohydrates, calcium, phosphorus, iron, carotene and so on, as well as a lot of thiopropene, allicin and dietary fiber.